It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.
Is some German friends visited last week?
that they may eventually reduce the amount of labor needed on construction sites by 90 percent.
for the fact that she got hit by a car and broke her leg on her way to school, she might have passed the exam.
Hesitating what to do,.
The retired man donated most of his savings to the school damaged by the earthquake in Yushu, _______ the students to return to their classrooms.